Study Purpose:

The objective of the study was to review the effectiveness of the use of single tunneled, valved pleural catheters in the treatment of symptomatic recurrent malignant pleural effusion following failed chemical pleurodesis.

Intervention Characteristics/Basic Study Process:

Two hundred seventy patients who underwent placement of a tunneled pleural catheter between January 2002 and December 2006 were identified after reviewing interventional radiology billing records. After subsequent review of inpatient and outpatient medical reports for each case, 63 were reportedly treated for dyspnea associated with recurrent malignant pleural effusion following failed pleurodesis. In the incidence of suboptimal drainage post-procedure, fibrinolytic therapy with tissue-type plasminogen activator (tPA) dissolved in saline was administered into the catheter to dwell for two hours in the pleural space prior to drainage and was repeated at one- or two-day intervals, if clinically required for optimal drainage and symptom relief. Catheters were drained every other day until the volume decreased to 50 mL, in which case it was drained every three days. Catheters were subsequently removed from patients who achieved durable symptom relief on three consecutive drainages during the three-day intervals with less than 50 mL of drainage and who had no radiographic evidence of re-accumulation. For those with larger drainage volumes, however, catheters were left in place for continued use.

Conclusions:

The large majority of patients (95%) experienced prompt symptom relief and clinical improvement following tunneled pleural catheter insertion. Parynchymal lung disease or rapid progression of disease was reported among the patients who did not improve from catheter placement.

Limitations:

The study had a small sample size of less than 100.

Authors did not describe how dyspnea was measured and evaluated pre- and post-catheter placement, making it hard to quantify/gauge the extent to which patients experienced symptomatic relief of dyspnea.

Authors were unable to analyze the durability of symptom relief due to lack of “uniformity” of clinical follow-up and documentation (i.e., regarding patients' drainage schedule, drainage volumes, symptoms, imaging).

Nursing Implications:

Use of tunneled pleural catheters for the treatment of recurrent malignant pleural effusion appears to be an appropriate and beneficial intervention for patients suffering from dyspnea following failed pleurodesis. The majority experienced immediate symptomatic relief of their dyspnea following catheter placement, although one-third of cases may necessitate transcatheter fibrinolytic therapy for adequate drainage. As noted by the authors, it is less invasive and more cost-effective than more successful, though high-risk interventions such as decortication (which is 100% effective but associated with high morbidity and mortality and not recommended for this population), thoracentesis (which offers immediate symptomatic relief but is associated with 98%-100% recurrence within 30 days), or thoracoscopy with talc poudrage (which has a high success rate but is more invasive and requires general anesthesia). It is also worth noting the short hospitalization period reported for 43% of the patient population, who were discharged within two days of catheter placement and symptom relief. However, effectiveness for patients with progressive disease remains questionable.